Bearing puller



E. P. CAMPBELL.

BEARING FULLER.

APPLICATION man MAY 4,1921.

1,435,278, Patented Nov. 14, 1922;

INVENTOR. Ernesi l Canweil ATTORNEY Y a stock'ass'ortment on PatentedNov. 14:, 1922.

. UNITED STATES 1,435,278 PATENT- oi-"rice.

nmmsr RCAMPBELL, or s'roox'ron, onmnonm.

BEARING FULLER.

Application filed m 4, 1921. erzlal no. 466,803.

To all "whom it may concern:

Be it known that I, ERNEST P. CAMPBELL,

a citizen of the United States, residing at Stockton, county of SanJoaquin, State of California, have invented certain new and usefulImprovements in Bearing Pullers; and I do declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying .draw-' ings, and 'to the characters of referencemarked thereon, which forma partof this application. I

This invention-relates to improvement-sin bearing pullers such-as areused to draw the inner races ofball bearings (from the shafts;

on which they-areldriven, andiis particularly an improvement'overj. thatfl'type, of puller shown in m .-Pa 'nt F ebruar'y 15th';'.1916.

The pri cie; 1. ob'ect'fof fate-pre ent in.

vention istoconstruct a puller-of. the above mentioned in sucl1-a"mannerthat the jaws -.aref inteichangeable. This feature alone marksfagreatiniproveinent' over the former type',;.'sii1oe it' means thatwhenthe devices are being manufactured the jaws are allmadefexactfduplicates :of each other and when assembling the "pullers,the; jaws may be taken-up at .raudom,instead of'ha-ving to have acertainf one to cooperate-with the adp jacent one,"as' was the casewithy-thepuller,

already patented; Bothf operations above cited means reduced costs inmanufacturing.-

This inter-changeability of; the jaws also permits the readyreplacementof a jaw. from hand or sent from the. factory.

Another object of this invention is to arrange tha'tthe screw-pin,whichis forced against the shaft-when pulling a bearing,

shall have a considerable and constant bearing area for its threads,irrespective of-the spreading of the jaws. This feature is also lackingin the previously mentioned patented article.

As a whole, thearticle has been made more eflicient, while the cost ofmanufacture has been .reduced.

The above objects I accomplish by means of such structure and relativearrangement of parts as will fully-appear by a perusal of the followingspecification and claims.

In the drawings similar characters of reference indicate correspondingparts in the several views.

r 0:; 1,590, dated 1 In order to normally 1 is a side elevation of thepuller. F g. 2 is a sectional elevation thereof. Fig. 3 1s afragmentary-section through the screw-collar.

Referring now more particularly to the characters of reference on thedrawings the numeral 1 denotes a threaded pin provided .at one endwith'a turning handle 2 and at the other witha tapered point 3- toengage t-heusual socket in the end of a shaft 4 having the bearing 5thereon to be pulled.

Ihreaded on the pin is a sleeve 6 having a central outwardly projectingflange .7. Surrounding the sleeve and extending lengthwise of the-pin inthe direction away from the handleare jaws 8 provided at one end'withgrooves 9 to'engagethe flange 7 and at. the other with flanges or lugs10 proecting inwardly and shaped to fit the groove 11 in the bearing.

Surrounding'thejaws loosely is a collar 12, threaded into which arescrews 13, one for each jaw, and which pass through said jaws and seatin orifices 14 in the sleeve-flange 7. The sleeve 6',tapersinwardlysomewhat toward each end from the flange 7, so as toallowvfreedom of movement of the jaws.

.The screws also pass freely through the jaws so as not to cause abinding of any of such.

arts. At the opposite ends; of the jaws the latter are enlarge and taperoutwardly somewhat toward such end, as shownat 15, and are surrounded bya taper-boredring or collar I6, which may be retracted onto the smallerportion of the jaws to allow the latter to be be moved onto and wedgedfirmly in contact with the tapered porti0n,'so as to clamp the thisdevice and the one shown in the aforementioned patent is in" the mannerof connecting the jaws to the operating or pulling screw so that thescrew at all times has a constant area of engagement with the sleeve,

spread, to engage a bearing, and may then l is mounted under the whileat the same time the jaws are allowed plenty of flexibility of movementat their outer ends. A

Also it will be noted that the jaws not beingthreaded, they may all bejigged to a common standard, and hence are interchangeable.

From the foregoing description it will be readily seen that l haveproduced such a device as substantially fulfills the objects of theinvention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not for a departure from the spirit ofthe invention, as defined by the appended claims.

Having thus described my invention, what I claim as new and useful anddesire to secure by Letters Patent is:

menace 1. A bearing puller comprising a threaded pin adapted forrotation, a sleeve threaded onto the in, an outwardly projecting flangeon said sleeve, and a plurality of bearing-engaging jaws surroundingsaid sleeve and provided with grooves in which said flange seats andbeing flexibly connected thereto,

screws threaded into the collar and passing freely through the jaws andbeing seated in the flange.

In testimony whereof ll afix my signature.

ERNEST P. CAMPBELL.

